EP2614693A1 - Method for coating an optoelectronic chip-on-board module and optoelectronic chip-on-board-module - Google Patents
Method for coating an optoelectronic chip-on-board module and optoelectronic chip-on-board-moduleInfo
- Publication number
- EP2614693A1 EP2614693A1 EP11757165.3A EP11757165A EP2614693A1 EP 2614693 A1 EP2614693 A1 EP 2614693A1 EP 11757165 A EP11757165 A EP 11757165A EP 2614693 A1 EP2614693 A1 EP 2614693A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silicone
- dam
- carrier
- optoelectronic
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005693 optoelectronics Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 title claims abstract description 37
- 239000011248 coating agent Substances 0.000 title claims abstract description 35
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 25
- 230000003287 optical effect Effects 0.000 claims description 12
- 239000000969 carrier Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 239000008204 material by function Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 238000001723 curing Methods 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 9
- 229920000647 polyepoxide Polymers 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 6
- 238000004382 potting Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000009974 thixotropic effect Effects 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- KGNDCEVUMONOKF-UGPLYTSKSA-N benzyl n-[(2r)-1-[(2s,4r)-2-[[(2s)-6-amino-1-(1,3-benzoxazol-2-yl)-1,1-dihydroxyhexan-2-yl]carbamoyl]-4-[(4-methylphenyl)methoxy]pyrrolidin-1-yl]-1-oxo-4-phenylbutan-2-yl]carbamate Chemical compound C1=CC(C)=CC=C1CO[C@H]1CN(C(=O)[C@@H](CCC=2C=CC=CC=2)NC(=O)OCC=2C=CC=CC=2)[C@H](C(=O)N[C@@H](CCCCN)C(O)(O)C=2OC3=CC=CC=C3N=2)C1 KGNDCEVUMONOKF-UGPLYTSKSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229940125833 compound 23 Drugs 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000003847 radiation curing Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/16—Fillings or auxiliary members in containers or encapsulations, e.g. centering rings
- H01L23/18—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device
- H01L23/24—Fillings characterised by the material, its physical or chemical properties, or its arrangement within the complete device solid or gel at the normal operating temperature of the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
- H01L23/3107—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed
- H01L23/3121—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape the device being completely enclosed a substrate forming part of the encapsulation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/1446—Devices controlled by radiation in a repetitive configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components with at least one potential-jump barrier or surface barrier specially adapted for light emission
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
- H01L31/02325—Optical elements or arrangements associated with the device the optical elements not being integrated nor being directly associated with the device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/284—Applying non-metallic protective coatings for encapsulating mounted components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/90—Methods of manufacture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0104—Properties and characteristics in general
- H05K2201/0108—Transparent
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0162—Silicon containing polymer, e.g. silicone
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/01—Dielectrics
- H05K2201/0137—Materials
- H05K2201/0175—Inorganic, non-metallic layer, e.g. resist or dielectric for printed capacitor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09818—Shape or layout details not covered by a single group of H05K2201/09009 - H05K2201/09809
- H05K2201/09909—Special local insulating pattern, e.g. as dam around component
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10106—Light emitting diode [LED]
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10121—Optical component, e.g. opto-electronic component
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10007—Types of components
- H05K2201/10151—Sensor
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/01—Tools for processing; Objects used during processing
- H05K2203/0104—Tools for processing; Objects used during processing for patterning or coating
- H05K2203/0126—Dispenser, e.g. for solder paste, for supplying conductive paste for screen printing or for filling holes
Definitions
- the invention relates to a method for coating an optoelectronic chip-on-board module, which comprises a flat carrier, which is equipped with one or more optoelectronic components, with a transparent, UV and temperature-resistant coating of one or more silicones, a corresponding Opto-electronic chip-on-board module and a system with several optoelectronic chip-on-board modules.
- Generic optoelectronic chip-on-board modules are used, for example, as luminous bodies, as high-power UV LED lamps, as photovoltaic modules, sensors or the like.
- the optoelectronic components used in this case are, for example, but not exclusively, LEDs or photodiodes in the form of chips or other components which, in the chip-on-board module, are mounted on a flat carrier, ie a metal, Ceramic or silicon substrate, a metal core or FR4 circuit board, a glass substrate, a plastic support o. ⁇ . Are arranged.
- These chip-on-board modules must be protected against mechanical damage and corrosion. For this purpose, the most compact and lightweight solutions are sought.
- a practical alternative to the protection of chip-on-board modules is a surface encapsulation of the components with a plastic-based potting material. Together with other functional components, such as interconnects and contacting elements, the optoelectronic components are embedded in chip-on-board devices. Modules together with a laminar support protected by coatings from mechanical damage and corrosion.
- epoxy resins are used for this purpose. These are first applied liquid as potting material and then cured thermally and / or radiation-induced. Since the potting material is initially liquid, a flow of the potting compound must be avoided. This is usually done by a form or a fixed frame.
- a plastic dam is applied to the support of the chip-on-board module, which encloses a surface of the carrier, in which subsequently a liquid filling compound of epoxy resin The dam and filling compound together form the coating of the module
- a viscous polymer with a dispensing device is applied or pulled in this process and then cured so that potting material is poured onto the surface enclosed by the dam
- the plastic dam produced in this way is not transparent, which is why opto-electronic chip-on-board modules coated in this way are used with optoelectronic components, such as LEDs or photodiodes, for example.
- thixotropic epoxy resins are used for this purpose, for example in the chip card manufacturing.
- Thixotropic epoxy resins are treated so that their viscosity depends on the mechanical force and its duration. In the case of thixotropic epoxy resins, therefore, liquefaction takes place due to the action of force when applying the dam and subsequent solidification due to the expansion of the material after it leaves the nozzle.
- epoxy resins are not UV-stable and therefore in a high-performance UV-LED module or in intense sunlight with UV components, as they are in photovoltaics, not stable, they age quickly under UV exposure and are destroyed.
- a surface casting which avoids the disadvantages mentioned, is more advantageous.
- the encapsulation should be transparent both in areas and in the edge area.
- high temperature and UV stability are relevant both for the production of corresponding optoelectronic components and for long-term stable functionality.
- the present invention has the object to provide a method for coating an optoelectronic chip-on-board module and a corresponding coated optoelectronic chip on-board module available in which a UV and temperature-resistant coating is realized and the most efficient use of the available on the chip-on-board module surface is achieved.
- this object is achieved by a method for coating an optoelectronic ring, which comprises a planar carrier, which is provided with one or more ren optoelectronic components is equipped, with a transparent, UV and temperature-resistant coating of one or more silicones, solved, which is characterized by the following process steps: a) preheating the substrate to be coated to a first temperature, b) applying a to be coated Surface or partial area of the support enclosing dam from a first, thermosetting, highly reactive silicone which cures at the first temperature to the preheated support, c) filling the area enclosed by the dam or surface of the support with a liquid second silicone, and d ) Curing the second silicone.
- the process according to the invention is based on the idea that silicones are used as a dam material in a modified "dam-and-fill" process, which has hitherto not been possible since silicones can not be thixotroped without losing their transparency
- Silicones are used according to the invention highly reactive silicones which are applied to the preheated carrier.As the carrier is preheated to a temperature at which the highly reactive silicone cures and also the volume and mass of the highly reactive silicone used as a dam material is very low, the applied cures Damming up material very quickly, before it can flow away, in order to realize raised geometries.
- Highly reactive silicone is understood as meaning a silicone which crosslinks rapidly or thermosetting at the first temperature and forms a transparent dam when it strikes the carrier in the process according to the invention, without deliquescing.
- the curing time is preferably in the range up to 10 seconds, preferably less than 5 seconds.
- Such silicones are known.
- An acceleration of the curing can also be achieved if the first silicone contains radiation-sensitive initiators and is irradiated after application with radiation, in particular visible or ultraviolet light, so that a pre-crosslinking is initiated, while the crosslinking occurs mainly thermally.
- the basin defined by the dam can subsequently be filled with liquid silicone in a "dam-and-fiH" process, which is subsequently filled in Curing by means of radiation can also be used as an alternative or in addition to this
- the application of the dam takes place in a relative movement of the dispensing device or nozzle and module, wherein the dispensing device can be stationary and the module is moved vice versa.
- the silicone strain is just as transparent as the silicone filling, so that no optical impairment occurs through the silicone strain.
- the surface casting is thus fully functional.
- the efficiency of the coating is substantially increased and it is possible to make further use of the area available on the carrier than has hitherto been the case, since conventional dams were not transparent and the area covered by the dams was not available for optoelectronic components.
- the first temperature in process step a) is a temperature of usually between 100 ° C and 150 ° C or above, adapted to allow rapid curing of the highly reactive silicone for the dam, without the optoelectronic components on the Carrier damage.
- the carrier is cooled to a second temperature and / or allowed to cool is, which is below the first temperature, in particular below a curing temperature of the second silicone.
- the second silicone can distribute evenly without curing and curing after the uniform and gapless distribution in the next step. This can in turn be done by increasing the temperature and / or by radiation curing.
- the second silicone is equally reactive or less reactive than the first silicone used to form a dam, or the same silicone is used as the first silicone and as the second silicone. If the second silicone is less reactive, a gapless and even replenishment of the Dam enclosed area take place even if the temperature of the carrier has not or only slightly reduced.
- the dam is applied via optoelectronic components, bond wires or other components, so that the surface utilization of the coating is not limited by the fact that the arrangement of optical chips, bonding wires or other components must be taken into account. Rather, the dam can be arranged in any way on the carrier.
- An advantageous development undergoes the method when the dam is applied with a cross-sectional profile, which causes an optical focusing or scattering of light. As a result, the luminous efficacy in the edge region can be modeled as desired. This also improves the alignability of adjacent modules, since shadows in the edge area are avoided.
- the shape of the dam is made possible by the spontaneous hardening of the silicone material for the dam and the influence of its hardening properties by the coordination of the process parameters.
- the corresponding process parameters are in particular the reactivity of the silicone material used, the temperature of the carrier and the application speed of the dam and the shape of the nozzle used, as well as a distance between the nozzle used and the carrier.
- optically functional materials in particular phosphorescent and / or scattering materials or particles, are or are mixed into the first silicone and / or the second silicone.
- Phosphorescent materials provide a wavelength shift, so that a desired adjustment of the emitted wavelength u. a. is possible with LED modules.
- Scattering particles and materials ensure that a uniform illumination or light emission, especially in lamp modules, is generated.
- Other miscible materials are, for example, color-absorbing or color-active materials.
- a likewise advantageous embodiment undergoes the method according to the invention when drops of the first silicone are applied as fast-curing lenses to individual optoelectronic components.
- Particularly flawless coatings result when the first and / or the second silicone under a vacuum, in particular at about 10 mbar, is pretreated. As a result, gas trapped in the liquid silicone is extracted from the silicone.
- the application and / or the curing of the first and / or the second silicone can advantageously be carried out under an atmospheric overpressure, in particular between 4 and 10 bar, in particular at about 5 to 7 bar. As a result, gas bubbles generated during casting and enclosed in the silicone are reduced to such an extent that they disappear and the gas contained therein diffuses into the silicone and through the silicone without disturbance.
- an optoelectronic chip on-board module comprising a planar carrier, which is equipped with one or more optoelectronic components, with a transparent, UV and temperature-resistant coating of one or more silicones characterized in that the coating comprises an embankment of a cured first silicone enclosing a surface or partial surface of the support and a second silicone filled and hardened into the surface or partial surface.
- an optoelectronic chip-on-board module according to the invention is provided with a transparent, UV and temperature-resistant coating in any desired manner, in particular over the entire surface, so that optionally the entire surface of a support for optical components is available.
- the arrangement of the opto-electro ⁇ African components on the carrier is thus not limited by requirements and constraints of the Be ⁇ coating.
- a UV-stable protection up to intensities of a few 10 W / cm 2 is given up to a temperature of typically about 200 ° C.
- This protection includes both the surface area and the edge area of the carrier or of the chip-on-board module below the coating and also protects the module and the connecting components mechanically.
- the optoelectronic chip-on-board module according to the invention can be produced or produced by the method according to the invention described above. Thus, it also has the properties and advantages already described in connection with the method according to the invention.
- the dam extends at least in sections at an edge of the carrier (2, 2 '). This makes it possible to optimally exploit the area provided on the carrier for optoelectronic components as desired. A production-related reasons of a coating left free edge is unnecessary.
- the first silicone and the second silicone preferably consist of the same material or have the same optical properties in the cured state, in particular with regard to transparency, color and / or refractive index.
- the coating of the chip-on-board module as a whole preferably has the same or similar optical properties at every point.
- the dam can advantageously be shaped in cross-section so as to have beam-bundling or scattering properties.
- the carrier is equipped with optoelectronic components up to an edge or until shortly before an edge, so that the area available on the carrier is optimally utilized and the optoelectronic components are protected.
- the object on which the invention is based is also achieved by a system having two or more optoelectronic chip-on-board modules according to the invention described above, wherein the carriers of the optoelectronic chip-on-board modules are arranged flush with one another, wherein in particular due to marginal placement of the carrier with optoelectronic components results in a regular arrangement and spacing of optoelectronic components beyond the boundaries between adjacent carriers.
- a uniform and borderless utilization of the available surface with optical components, such as LEDs or photodiodes, is also possible when assembling several chip-on-board modules.
- the subject of the invention ie the method according to the invention, the optoelectronic chip-on-board module according to the invention and the system according to the invention, have in common that the hardness of the silicone can be chosen, typically between a gel and a Shore hardness close to 100, so that thermally induced voltages are attenuated can occur due to different coefficients of expansion between carrier, chip-on-board components and connection materials.
- FIG. 1 shows a schematic representation of a chip-on-board LED module
- FIG. 2 shows a schematic illustration of a system with two chip-on-board LED modules
- Fig. 3 is a schematic representation of a conventionally coated
- FIG. 4 is a schematic representation of a chip-on-chip coated according to the invention.
- the invention is explained on the basis of chip-on-board LED modules, that is to say with reference to luminous bodies, as an example of optoelectronic chip-on-board modules.
- photodiodes in solar cells or other components can be used instead of LED modules as optoelectronic components.
- a chip-on-board LED module 1 is shown without coating in cross-section schematically, in which on two parallel carriers 2, 2 'or substrates printed conductors 3, 3' and designed as unbehauste LED chips LEDs 4, 4 'arranged at regular intervals EP2011 / 004327
- FIG. 10 are net. For reasons of clarity, not all recurring elements of FIG. 1 and the following figures are provided with reference numerals, but these relate to all similar elements. Thus, in FIG. 1, only one LED 4, 4 'is provided with a reference number for each of the two chip-on-board LED modules 1, 1'. The other components are identical.
- the LEDs are approximately Lamertian emitters, which radiate about 75% of the total radiated light output within an opening angle of 120 °. If the surface equipped with LEDs 4, 4 'is expanded with respect to the measuring distance and the distance is sufficiently greater than the distance of the LED chips, also called "pitch", then a homogeneous intensity distribution is measured with similar properties to those of a homogeneous, diffusely luminous one Area.
- the homogeneous intensity distribution also continues via the abutment 6 between adjacent modules 1, 1 ', since the overlapping region 7 of the light cones 5, 5' at this point due to the regular and marginal placement of the carriers 2, 2 is well formed with LEDs 4, 4 'and the absence of optical obstacles.
- the conventional dams 12, 12 ' can not be installed on the LEDs 4, 4', but need their own space.
- the edge region of the carriers 2, 2 'must therefore remain free on the chip-on-board LED modules 11, 11' in FIG. 2 of LEDs 4, 4 '.
- a chip-on-board LED module 1 1 is schematically shown, as shown in Fig. 2, but in this case without the light cone 5, 5 ', but with the representation of the filling material thirteenth made of epoxy resin.
- the coating of the dams 12 and the epoxy 13 protect the opto-electronic components, i. the LEDs 4 and the tracks and the carrier 2 of the chip-on-board LED module 1 1 mechanically, but they are not UV-resistant.
- the dam 12 is not transparent.
- an inventive chip-on-board LED module 21 is shown schematically, in addition to the usual components carrier 2, conductors 3 and LEDs 4, a coating 24 of a dam 22 made of a highly reactive silicone and a filling material 23 from a Silicone has.
- This coating 24 is transparent both in the filling compound 23 and in the dam 22, so that the LEDs 4 can be distributed uniformly up to the edge of the carrier 2.
- the dam 22 is partially applied across the LEDs 4 on the carrier 2, shaded because of its transparency, however, their light emission does not.
- the production takes place in which first the carrier 2 with the components arranged thereon, i. the conductor tracks 3 and the LED chips 4, is heated and then the dam 22 is applied from a highly reactive silicone in the desired manner to the carrier 2. Since it is a very small mass and the temperature of the carrier 2 is at or above the evaluation temperature of the silicone, the silicone of the dam 22 hardens before it can creep or flow. Radiation-induced precuring can also be carried out if the silicone contains corresponding initiators. Subsequently, after the dam, which projects beyond the height of the LEDs 4 above the carrier 2, filled with liquid silicone 23, and then cured.
- this modified "dam and fill” process allows a transparent, UV and temperature-resistant coating of optoelectronic chip-on-board modules.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010044470.7A DE102010044470B4 (en) | 2010-09-06 | 2010-09-06 | Method for coating an on-board opto-electronic module, optoelectronic chip-on-board module and system therewith |
PCT/EP2011/004327 WO2012031704A1 (en) | 2010-09-06 | 2011-08-29 | Method for coating an optoelectronic chip-on-board module and optoelectronic chip-on-board-module |
Publications (2)
Publication Number | Publication Date |
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EP2614693A1 true EP2614693A1 (en) | 2013-07-17 |
EP2614693B1 EP2614693B1 (en) | 2019-05-08 |
Family
ID=44651629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11757165.3A Not-in-force EP2614693B1 (en) | 2010-09-06 | 2011-08-29 | Method for coating an optoelectronic chip-on-board module and optoelectronic chip-on-board-module |
Country Status (6)
Country | Link |
---|---|
US (2) | US9093622B2 (en) |
EP (1) | EP2614693B1 (en) |
JP (1) | JP5595593B2 (en) |
CN (1) | CN103190205A (en) |
DE (1) | DE102010044470B4 (en) |
WO (1) | WO2012031704A1 (en) |
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DE102010044470B4 (en) | 2010-09-06 | 2018-06-28 | Heraeus Noblelight Gmbh | Method for coating an on-board opto-electronic module, optoelectronic chip-on-board module and system therewith |
KR20130043685A (en) | 2010-09-06 | 2013-04-30 | 헤레우스 노블라이트 게엠베하 | Coating method for an optoelectronic chip-on-board module |
DE102011107892A1 (en) | 2011-07-18 | 2013-01-24 | Heraeus Noblelight Gmbh | Method for coating e.g. chip-on-board UV-LED module utilized in solar cell, involves curing and cross-linking liquid silicone with optoelectronic components and carriers, and removing carrier with hardened silicone coating from mold |
US9373730B2 (en) * | 2011-04-26 | 2016-06-21 | Sanyu Rec Co., Ltd. | Method and apparatus for manufacturing optical device |
DE102011107895B4 (en) | 2011-07-18 | 2020-11-05 | Heraeus Noblelight Gmbh | Optoelectronic module with lens system |
DE102011107893A1 (en) | 2011-07-18 | 2013-01-24 | Heraeus Noblelight Gmbh | Optoelectronic module with improved optics |
JP5810758B2 (en) * | 2011-08-31 | 2015-11-11 | 日亜化学工業株式会社 | Light emitting device |
JP2014022435A (en) * | 2012-07-13 | 2014-02-03 | Toyoda Gosei Co Ltd | Light-emitting device and method for manufacturing the same |
TWI548005B (en) * | 2014-01-24 | 2016-09-01 | 環旭電子股份有限公司 | Manufacturing method of selective electronic packaging device |
JP6274943B2 (en) * | 2014-03-27 | 2018-02-07 | 新日本無線株式会社 | LED module and manufacturing method thereof |
CN104037097B (en) * | 2014-05-23 | 2016-12-07 | 南通皋鑫科技开发有限公司 | A kind of plastic sealed axial diode glue-line coating method |
DE102014112540A1 (en) * | 2014-09-01 | 2016-03-03 | Osram Opto Semiconductors Gmbh | Optoelectronic component |
WO2017013870A1 (en) * | 2015-07-22 | 2017-01-26 | パナソニックIpマネジメント株式会社 | Light emitting device |
DE102016101942B4 (en) | 2016-02-04 | 2022-07-21 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Method for producing an optoelectronic lighting device |
US10295128B2 (en) | 2016-08-01 | 2019-05-21 | Streamlight, Inc. | Lighting device including an LED chip-on-board light source and conformal lens |
USD814675S1 (en) | 2016-08-01 | 2018-04-03 | Streamlight, Inc. | Light resembling a key |
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CA3108074A1 (en) * | 2018-07-30 | 2020-02-06 | Knog Pty Ltd | Portable light |
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US6790473B2 (en) * | 1995-10-26 | 2004-09-14 | International Business Machines Corporation | Lead protective coating composition, process and structure thereof |
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US8835952B2 (en) * | 2005-08-04 | 2014-09-16 | Cree, Inc. | Submounts for semiconductor light emitting devices and methods of forming packaged light emitting devices including dispensed encapsulants |
US7646035B2 (en) * | 2006-05-31 | 2010-01-12 | Cree, Inc. | Packaged light emitting devices including multiple index lenses and multiple index lenses for packaged light emitting devices |
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US20080112162A1 (en) | 2006-11-09 | 2008-05-15 | Topson Optoelectronics Semi-Conductor Co., Ltd. | Backlight Structure Having Embedded LEDs and Fabrication Method Thereof |
US7633055B2 (en) * | 2007-03-08 | 2009-12-15 | Lumination Llc | Sealed light emitting diode assemblies including annular gaskets and methods of making same |
US7659531B2 (en) * | 2007-04-13 | 2010-02-09 | Fairchild Semiconductor Corporation | Optical coupler package |
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DE102008025491A1 (en) * | 2008-05-28 | 2009-12-03 | Osram Opto Semiconductors Gmbh | Optoelectronic semiconductor component and printed circuit board |
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JP5673993B2 (en) * | 2008-12-26 | 2015-02-18 | 東芝ライテック株式会社 | Light source module and lighting device |
DE102010044470B4 (en) | 2010-09-06 | 2018-06-28 | Heraeus Noblelight Gmbh | Method for coating an on-board opto-electronic module, optoelectronic chip-on-board module and system therewith |
-
2010
- 2010-09-06 DE DE102010044470.7A patent/DE102010044470B4/en not_active Expired - Fee Related
-
2011
- 2011-08-29 WO PCT/EP2011/004327 patent/WO2012031704A1/en active Application Filing
- 2011-08-29 US US13/819,983 patent/US9093622B2/en not_active Expired - Fee Related
- 2011-08-29 EP EP11757165.3A patent/EP2614693B1/en not_active Not-in-force
- 2011-08-29 CN CN2011800427976A patent/CN103190205A/en active Pending
- 2011-08-29 JP JP2013527484A patent/JP5595593B2/en not_active Expired - Fee Related
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2015
- 2015-02-09 US US14/617,067 patent/US9252341B2/en not_active Expired - Fee Related
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US20150155453A1 (en) | 2015-06-04 |
US20130154130A1 (en) | 2013-06-20 |
JP5595593B2 (en) | 2014-09-24 |
JP2013538458A (en) | 2013-10-10 |
WO2012031704A1 (en) | 2012-03-15 |
DE102010044470B4 (en) | 2018-06-28 |
US9252341B2 (en) | 2016-02-02 |
DE102010044470A1 (en) | 2012-03-08 |
CN103190205A (en) | 2013-07-03 |
EP2614693B1 (en) | 2019-05-08 |
US9093622B2 (en) | 2015-07-28 |
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